Backed by a 110-year warranty and constructed in Fletcher, NC, the 110-Series headset is designed with no compromises in quality, durability, or finish quality. Integrated bearings fit directly into compatible head tubes without the need of a bearing press. Key Features Sealed stainless steel bearings Carbon-friendy compression ring captured in top cover, keeping shims in place 7075 T-6 aluminum cups machined in Fletcher, NC Aluminum dual seal crown race protects lower bearing Interlok spacer compatible 110 year warrranty Uses 36/45 degree crown race and compression ring Compatible with tapered 1-1/8" to 1-1/2" steerer tubes, or straight 1-1/8" steerers with a conversion crown race (sold separately) Specifications Color Black Lower Stack Height 1 Bearing Type Cartridge Crown Race 40 Defined Color Black Upper Stack Height 9 S.H.I.S Upper IS41 S.H.I.S. Stem Clamp Diameter 28.6 Threadless S.H.I.S Lower IS52